`restart: false` action parameter not respected

Currently the `restart` parameter does not work. Regardless of the value, the webapp will always be restarted.

https://github.com/Azure/webapps-deploy/blob/39572e36d88baacea0a68b870e4e7021c982c551/action.yml#L40-L42
**Example:**
```
uses: azure/webapps-deploy@v3
with:
app-name: myappname
images: myorg/myimage:v9.9.9.9
restart: false
```

I think this needs ultimatively be fixed upstream in [microsoft/pipelines-appservice-lib](https://github.com/microsoft/pipelines-appservice-lib). The issue occurs due to an incorrect handling of the boolean parameter.
See: https://github.com/microsoft/pipelines-appservice-lib/issues/113